diff --git "a/04-\351\205\215\347\275\256\346\226\207\344\273\266/requirements.txt" "b/04-\351\205\215\347\275\256\346\226\207\344\273\266/requirements.txt"
index 3d9e933..5de7990 100644
--- "a/04-\351\205\215\347\275\256\346\226\207\344\273\266/requirements.txt"
+++ "b/04-\351\205\215\347\275\256\346\226\207\344\273\266/requirements.txt"
@@ -165,4 +165,4 @@ safety==3.0.1                      # [稳定层] 依赖 CVE 检查
 # opentelemetry-sdk>=1.27.0
 # opentelemetry-exporter-otlp>=1.27.0
 # opentelemetry-instrumentation-fastapi>=0.48b0
-httpx[http2]>=0.27.0               # APNs (HTTP/2 强制) + 异步 HTTP API client
+httpx[http2]>=0.28.1               # APNs (HTTP/2 强制) + 异步 HTTP API client